What is the average lead response time?

About 42 hours. That figure comes from a Harvard Business Review study published in March 2011, which audited 2,241 U.S. companies by submitting a test lead to each one. Among companies that responded within 30 days, the average response took 42 hours. 23% never responded at all.

What is a good lead response time?

Under five minutes. XANT's 2021 analysis of 5.7 million leads found conversion rates roughly 8 times higher when contact happens inside the first five minutes. The same data found that under 1% of first contact attempts actually occur that fast, which is why a five-minute response is a genuine competitive advantage rather than a baseline expectation.

Is the '78% of customers buy from the first responder' statistic real?

There is no verifiable primary source for it. The claim is usually attributed to a company called Lead Connect, but no published report or methodology exists anywhere, and every citation traces back to marketing blogs quoting each other. We do not use it, and you should be skeptical of any vendor whose pitch leads with it. The underlying idea that responding first matters is well supported by other studies that do have published methodologies.

How many calls do home services businesses miss?

Roughly 27% of inbound calls go unanswered, according to Invoca's call-tracking data across home services businesses including HVAC, plumbing, roofing, and electrical. The misses tend to concentrate during peak demand periods, when the business is busiest and least able to answer.

Reference · Updated August 2026

What's the average lead response time? 42 hours.

Every number below is one we're willing to put a source next to. Where a widely-repeated statistic turns out to be untraceable, that's noted rather than quietly reused. If you're being sold lead-response software right now, this page is the fact-check.

The headline numbers

42 hours — average time to respond to an online lead (Harvard Business Review, 2,241-company audit)
23% — companies that never responded at all
8x — conversion lift when a lead is contacted inside 5 minutes (XANT, 5.7 million leads)
Under 1% — first contact attempts that actually happen inside 5 minutes
27% — inbound calls to home-services businesses that go unanswered (Invoca)
40% — law firms that answered their phone in a 500-firm secret-shopper study (Clio)

Harvard Business Review, 2011 — the 42-hour number

This is the most rigorous public audit of the problem, and it's the source of the "average response time" figure everyone quotes. Researchers submitted a test lead to 2,241 U.S. companies and measured what actually happened.

37% responded within an hour
16% responded within one to 24 hours
24% took more than 24 hours
23% never responded at all
Average response time, among those who responded within 30 days: 42 hours

Firms that made contact within an hour were about seven times more likely to have a meaningful conversation with a decision-maker than those that waited even one hour longer, and sixty times more likely than those who waited a day or more.

One caveat worth stating: this study is from 2011. It predates widespread texting-with-businesses and modern lead forms. It is frequently misquoted as "47 hours"; the published figure is 42.

Source: Harvard Business Review — The Short Life of Online Sales Leads

The InsideSales/MIT study — where the "5-minute rule" comes from

Usually called "the MIT study," this analyzed three years of data covering more than 15,000 leads and 100,000 call attempts across six companies. The lead author, Dr. James Oldroyd, was a research fellow at MIT Sloan at the time.

The finding: contacting a lead within 5 minutes rather than 30 minutes made you roughly 100 times more likely to make contact at all, and 21 times more likely to qualify that lead.

Be precise about what this is when you cite it: it's platform data analyzed by an MIT-affiliated researcher, not a peer-reviewed MIT publication. Call it the InsideSales/MIT lead response study. The effect is large and the methodology is public, which is more than most numbers in this space can claim.

Source: Lead Response Management Study

XANT, 2021 — the modern update

The largest recent dataset: 5.7 million leads and 55 million sales activities across more than 400 companies, covering 2018 to 2020.

Conversion rates roughly 8x higher when contact is made inside the first 5 minutes
Under 1% of first call attempts happen within that window
57.1% of first attempts happen a week or more after the lead came in

That second number is the one that matters commercially. The five-minute window isn't a standard everyone is meeting and you're falling short of. Almost nobody is meeting it, which is exactly why hitting it is worth something.

Source: XANT Lead Response Report

Home services — 27% of calls go unanswered

Invoca's call-tracking data across home-services businesses (HVAC, plumbing, roofing, electrical) puts unanswered inbound calls at roughly 27%.

The compounding problem is when those misses happen. They cluster during peak demand — the heat wave, the freeze, the storm — because that's when every technician is already on a job and nobody is near the phone. The week you're busiest is the week you lose the most work, and it never shows up in any report, because an unanswered call that leaves no voicemail leaves no trace at all.

Source: Invoca — the cost of missed calls in home services

Law firms — the most damning data in any industry

Clio's 2024 Legal Trends Report commissioned a third-party secret-shopper study of 500 law firms. The results:

Only 40% answered the phone
Roughly half were effectively unreachable by phone, even counting callbacks
Only about a third responded to email at all
73% of shoppers said they would not recommend the firms they contacted

A separate 2026 study of after-hours intake across 1,000 U.S. personal-injury firms in 25 cities found a 40.9% after-hours non-answer rate — and, most strikingly, that 29.2% of firms advertising "Open 24 Hours" on their Google Business Profile did not answer. Note that this second study's authors are affiliated with an AI intake vendor, so treat it as directionally useful rather than neutral. Clio's is the cleaner citation.

Sources: Clio Legal Trends Report · SSRN — After-Hours Intake Response Rates

The statistic we refuse to use

"78% of customers buy from the company that responds first."

You will see this on nearly every page selling lead-response software, including from companies far larger than this one. It is normally credited to "Lead Connect."

There is no such report. No methodology, no sample size, no publication date, no primary document anywhere. Every citation leads to another marketing blog citing another marketing blog. The related claim that "35–50% of sales go to the first vendor to respond," usually pinned on InsideSales, is equally untraceable.

We don't use them. Not because responding first doesn't matter, since the studies above show that it plainly does, but because a real effect doesn't need a fake number attached to it. If a vendor will invent a statistic to win the sale, that tells you what else they'll invent.

Source for the debunking: Expertise AI — Speed-to-Lead Statistics, Verified

What this means in practice

Put the numbers together and the picture is consistent across fifteen years and several million leads: response speed has a large effect on conversion, the effect concentrates inside the first five minutes, and almost no business achieves it, because achieving it requires answering at hours and moments when there is no human free to answer.

That gap is the entire reason this business exists. The system we build for clients answers every call and every form fill in under two minutes, around the clock. At a Las Vegas tax firm running it today, that produced 83 leads, 23 booked consultations, and 3 signed clients in the first fourteen days after go-live, published with the firm's written permission.

See how the system works →

Compiled and maintained by Alfredo Garcia at Webbynd, Las Vegas. Last reviewed August 12, 2026. If you find an error or a better primary source for anything here, email me and it gets corrected.